MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts and environmental sealing for reliable performance. With an operating temperature range of -65 °C to 200 °C, these connectors are suitable for a wide range of applications. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. The high-strength aluminum shells come in different plating options, including cadmium-free finishes for RoHS compliance. Offering front and rear wall mount options, as well as jam nut receptacles, these connectors are ideal for military and aerospace use.